Spring-heeling machine.



W. S. POSTER. SPRING HEELING MACHINE. APPLICATION FILED SEPT. 28, 1912.

Patented 0011.21, 1913.

INVENTOR WM 8. 6 m

m I WiTNESSES:

BYM W IATTORNEYS n ne.

WILHAI; s. est-En. oa s AQflGrNQR FOS'EER BR0THER$ Meme eeer eme camera. or t me. NEW en s-em r E YORK- srnrne-nnnnrne MACHINE.

LOWJW.

Specification or Letters Patent; Pgrtgnted (mt, 21, 1913,

Application filed September 2 .5, 1912. Serial No. 722,870.

To all whom it may concern:

Be it known that 1, WILLIAM S. FOSTER, a citizen of the United States, residing at Utica,iin the county of Oneida and State of New York, have invented certain new and useful Improvements in SpringHeeling Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to )rovide a simple and effective machine to the accompanying drawings, and to the reference-numerals marked thereon, which form partof this specification.

The purpose of my present invention is to form the heel upon coil springs such as aroused in beds, chairs and other uphol: stered furniture. The usual and simplest way of fastening the'lower end of such a spring to the frame or cross pieces of the article of furniture is to have the wire of that end of the spring formed into a heel which is a substantially straight piece extending diametrically of the convol'utions of the spring and preferably extending nearly across the lower convolution. Such. a heel enables the spring to be securely looked upon its support and kept fromrotation thereon. r

Heeled coil springs may be formed with the heel made at the time of coiling the spring by leaving one end of the wire straight and bent across for the heel but this" process of making springs adds to the complexity of the spring coiling machine and in terrupts the continuity of the coiling operation.' It is found that it is much quicker to coil the whole spring and make the heel by a separate machine.

To provide such a 'machine that is so simple and adapted to perform the work as to allow the heels to be made with great rapidity is the purpose of my invention.

Figure 1 is a plan view of a machine embodying my invention, full lines showing the machine in the first or open position and dotted lines showing the parts moved to the middle or grasping position. Fig. 2 is a plan View of the machine with the parts moved to final position and showing the heel formed. Fig. 8 is a sectional view on line 33 of Fig. 1 Fig. 4 is a sectional view on line 4-4 of Figll. I

Referring to the drawings in a more particular description, the bed plate 6 is supported in proper fixed position as by being the head of a table or on a work bench. By means of pin 7 there is pivotally mounted on the bedplate a swinging plate 8 upon which spaced from the pin 7 is a semi-circular head 9 having its rounding side 10 toward the pivotal pin 7 and its straight or .slightly concave side 11 away from the pin 7 Spaced from the pivot 7 is a lug 12 projecting upward through a curved slot 13 in the swinging plate 8 so that as the swingingplate is movedin theproper direction, or toward the right as illustrated in the 'drawings,ethe head Qapproa'ches the lug 12,

with the: straight side 11 toward the lug;

The head 9is of suchsize as .to have its rounding side 1() fit the inside of th lower convolution 14 of a coiled spring which is so'placed on the head as to have'the end 15; of the spring extend out "beyond '1 peint 27 and in front of the straight side 11 of the head to such an extent as will jcause the end 15 when straightened out during the heeling perationtoreach substan- .itially across the diameter of the lower con ivolution 14 of the the heel 16. A i l r It will be obvious that when the lower convolution 14 of the coiled spring is held coiled spring and form firmly in place about the head 9 and then swung toward the lug-12, the end 15 of the is illustrated. Beyond its pivoting point 17,

the lever 18 is extended to form "a hook 2Q having its end approach to'within a short distance of the rounding side 10 of the projection 9*so that in the first or'open position of the machine the lower convolution 14 of the coiled spring: may be readily placed over the projection 9 but as the lever 18 is moved to the right to the second position the end of the hook 20 as a movable jaw presses against the convolution 14 and firmly holds it against the rounding side 10 of the head 9. The same movement of the lever 18 also brings up into gripping engagement with the lower convolution 1d the overhanging end of a jaw 21 slidlngly mounted on the swinging plate 8 and p votally connected at 22 to the link 28 which in turn is pivoted at 24 to the lever 18. 'lhe jaw 21 is located to the left of the pro ection 9, that is to the side opposite to the lug 12, so that movement of the lever to the right moves the jaw 21 toward the coiled spring H and when the lever has been moved to the second position, shown in dotted lines in 1, the jaw has come to engage the part of the spring convolution let that farthest from the lug 12 and at the opposite point 28 of the head 9. The engaging ends of hook jaw 20 and jaw 21 overhang the wire of the spring so as to prevent any upward movement of the wire while their contact against the coil prevents any movement of the coil 14; away from the head 9 during the heeling operation.

A spring 25 let into a socket 26 in the bed plate 6 and pressing against the lower surface of the swinging plate 8 increases the power necessary to move the swinging plate 8 on its pivot to an extent sufficient to always cause the initial pressure applied to move the lever 18 to the right, to move that lever on its pivot 17 and cause the spring to be operated upon to be grasped by the hook jaw 20 and the sliding jaw 21 before the plate 8 is moved on its pivot. As soon as the spring is thus grasped further movement of the lever 18 on its pivot 17 on the plate 8 is prevented and continued movement of the lever 18 in the same general direction swings the plate 8 upon its pivot 7 and carries the head 9 with the projecting end 15 of the spring toward and against the lug 12. By continuing this movement the wire of the spring is bent abruptly opposite the point 27 of the head 9 and is bent back against the straight or slightly concave anvil surface 11 of the. head until the end 15 is formed into a substantially straight heel 16 extending diametrically of the convolutions of the spring. Fig. 2 shows the relative po sition of the parts of the machine at this final stage and also a completed heel.

Movement of the lever 18 to the left, first moves it upon its pivot and retracts the hook jaw 20 and sliding jaw 21 from their hold upon the heeled spring and allows the operator to remove the spring from the machine by lifting it upwardly from the head 9. A screw 29 passing through an elongated slot 30 into the swinging plate 8 acts as a stop to the backward pivotal movement of the lever 18 after the hook jaw 20 and sliding jaw 21 have been thus retracted, by engaging the left end of the elongated slot, whereupon further backward movement of the lever 18 swings the plate 8 on its pivot 7 until all the parts are again in the first position as shown in Fig. 1 ready for the next operation. It will be seen that the whole work of the operator is to place the spring on the head 9, swing the lever 18 to the right, bring it back, and lift off the completed spring.

What I claim as new and desire to secure by Letters Patent is:

1. In a spring heeling machine, a head having one side adapted to engage the inside of the lower convolution of a coiled spring, and the other side shaped as an anvil adapted to form a straightening surface for the projecting end of the spring, jaws for holding the spring upon said head, a lug adapted to press the projecting end of said spring against said anvil, said head and lug being mounted in movable relation to each other, and means for bringing said head and lug toward each other.

2. In a spring heeling machine, a head having one side adapted to engage the inside of the lower convolution of a coiled spring, and the other side shaped as an anvil adapted to form a straightening surface for the projecting end of the Spring, jaws movable toward said head for holding the spring upon said head, a lug adapted to press the projecting end of said spring against said anvil, said head and lug being mounted in movable relation to each other, means adapted to move said jaws toward the head and hold the spring thereon, and means for bringing said head and lug toward each other.

3. In a spring heeling machine, a head having one side adapted to engage the inside of the lower convolution of a coiled spring, and the other side shaped as an anvil adapted to form a straightening surface for the projecting end of the spring, jaws movable toward said head for holding the spring upon said head, a lug adapted to press the projecting end of said spring against said anvil, said head and lug being mounted in movable relation to each other, and a single lever operatively connected to move said jaws to hold the Spring upon the head and then to bring said head and lug toward each other.

4. In a spring heeling machine, a stationary bed plate, a swinging-plate pivotally mounted on the bed plate, a head on said swinging plate spaced from its pivoting point and having one side adapted to engage the inside of the lower convolution of a coil spring and the other side shaped as an anvil adapted to form a straightening surface for the projecting end of the spring, a lug mounted in said bed plate and extending upward through said swinging plate and in the path of said head, means for holding the spring upon said head, and means for swinging said head toward said lug and pressing the projecting end of said spring against said straightening surface.

5. In a spring lieeling machine, a stationary bed plate, a swinging plate pivotally mounted on the bed plate, a head on said swinging plate spaced from its pivoting point and having one side adapted to engage the inside of the lower convolution of a coil spring and the other side shaped as an anvil adapted to form a straightening surface for the projecting end of the spring, a lug mounted in said bed plate and extending upward through said swinging plate and in tne path of said head, movable jaws for hiding the spring upon said head, means for perating said jaws, and means for swingng said head toward said lug and pressing the projecting end of said spring again ,t said straightening surface.

6. n a spring heeling machine, a stationary ed plate, a swinging plate pivotally mounted on the bed plate, a head on said swinging plate spaced from its pivoting point and having one side adapted to engage the inside of the lower convolution of a coil spring and the other side shaped as an anvil adapted to form astraightening surface for the projecting end of the spring, a lug mounted in said bed plate and extending upward through said swinging plate and in the path of said head, and a single lever operatively connected to move said jaws to gripping position and then to swing said head toward said lug and straighten out the projecting end of the spring against said anvil;

In witness whereof I have aflixed my sig- 7 nature, 1n the presence of two wltnesses, this 1 Copies of this patent niay be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

